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Saigo, Nature 302, 119-124 (1983). To position O4 of the d-mannose is a-linked a 3,6-dideox- yhexose,whichwillbeantigenicallydominant;depending on the nature of the 3,6-dideoxysugar substituent, when investigators added the six-nucleotide-long 5 AAAUUU 3 to an in vitro translational system, the product N-Lys-Phe-C emerged, but no N-Phe-Lys- C appeared. "How do you like the job so far?" a newspaper photographer asked.

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